TIN and contours
Triangulates the selected points, level texts or 3D polylines and draws contour lines at the interval; every so many is a major contour, labelled along its length if ticked.
Draw the TIN triangles shows the triangulation itself (to check it); the longest edge keeps long thin triangles at the outside out. Smooth contours rounds the lines. Spot level and Surface volume use the last TIN.
Commands
CXCONTOURTIN and contours…
Triangulate points, level texts or 3D polylines and draw contours with labels.
CXSPOTSpot level at points
Interpolate the level at picked points on the last TIN.
CXSURFVOLSurface volume…
Cut / fill volume of a surface against a level or a second surface (grid method, optional boundary).